github 重命名 master 为 main 分支

打开 github 设置里，手动修改

本地本支还在 master

# master is now named main
# If you have a local clone, you can update it by running the following commands.

git branch -m master main
git fetch origin
git branch -u origin/main main
git remote set-head origin -a

重命名 + fetch origin

git branch -m master main
git fetch origin

推送 main  + 推到远程

git branch -u origin/main main
git remote set-head origin -a

删除本地分支

git branch -D master

执行以下2行命令

git fetch origin
git remote update origin --prune